Configure: better check for PCRE JIT. On Mac OS X system toolchain by default prefers include files from /usr/local/include, but libraries from /usr/lib. This might result in various problems, in particular the one outlined below. If the PCRE library is installed into /usr/local/, this results in pcre.h being used from /usr/local/include (with PCRE_CONFIG_JIT defined), but libpcre from /usr/lib (as shipped with the OS, without pcre_free_study() symbol). As a result build fails as we use pcre_free_study() function if we try to compile with PCRE JIT support. Obvious workaround is to the root cause is to ask compiler to prefer library from /usr/local/lib via ./configure --with-ld-opt="-L/usr/local/lib". On the other hand, in any case it would be good to check if the function we are going to use is available, hence the change. See thread here for details: http://mailman.nginx.org/pipermail/nginx-devel/2012-December/003074.html Prodded by Piotr Sikora.

<!ENTITY  nbsp         "&#xA0;" >
<!ENTITY  mdash        "&#xA0;- " >


<!ELEMENT change_log   (changes)* >
<!ATTLIST change_log   title  CDATA #REQUIRED >

<!ELEMENT changes      (change)* >
<!ATTLIST changes      ver    CDATA #REQUIRED
                       date   CDATA #REQUIRED
>

<!ELEMENT change       (para)* >
<!ATTLIST change       type (bugfix | feature | change | security | workaround) #IMPLIED >

<!ELEMENT para         (#PCDATA | at | br | nobr)* >
<!ATTLIST para         lang (ru | en) #REQUIRED >

<!ELEMENT at           EMPTY >
<!ELEMENT br           EMPTY >
<!ELEMENT nobr         (#PCDATA) >